Airplane landing light lamp retaining ring



J. M. ROPER Nov 21, 1944.

AIRPLANE LANDING LIGHT LAMP RETAINING RING Filed Sept. 24. 1943 INVENTOR M. Rona. fflfiu 4 ,4 AT!" RNEY JoHN Patented Nov. 21, 1944 2,363,147 l AIRPLANE LANDING LIGHT LAMP Y j CREI'I'AINING rno, mm Mam, Washington, 1). o." j Applicationsept berze,metaseri ina soaeoof1 i j i l 3Clairns. (om t-41.55)

(Granted underthelact o'f'March3, 1883, as, l amended April 30, 1928; 370 0. G 75?) '-1 E S -T F E 9 This invention relates to a lamp lens retaining ringand hasfor an object to provide an improved means of retaining or holding a lamp, particularly of the so-called sealed-beam type in a veits retractable i ll) a securing means for retaining the lamp? in its 1 canopy that maybe applied orremoved quickly and easily, thus facilitatingthe replacement of the lamp when it is burnt out or damaged.

Still a further object of this invention is to provide a retaining ring thatneeds only a single tool, such as a pair. of sharp nose pliers, for ap-.

plying it as well as for detaching it.

With the foregoing and other objects in View, the invention consists in the construction, combination and arrangement of parts hereinafter described and illustrated in the drawing, in

which: Fig. 1 is an elevational view of sition; l

I Fig. 2 is an edge elevational view of the ring; Fig. 3 is a side view on an enlarged scale;

Fig. 4 is abroken detail view at arrows 4-4 of Fig. 3; and

Fig. 4.

There is shown at ID the bottom skin of an airplane wing in which is recessed a bracket H the-retaining ring of this invention as applied in operative po- Fig. 5 is a broken detail viewat arrows 3-5 of position on the opposite side of the joint 23 in the ring l6, and each is provided with an extruded nub 3| ahead of an aperture 32 for receivin the prongs of apair of sharp nose pliers for pulling the clips toward each other in engagingor disengaging the joint 23. A depressed tongue 33 is formed on one side of the joint 23 and is overlapped by the other side of the joint when in closed position to insure a tightfit. l i In operation, the lamp and its lens I are placed in, the canopy 12 in the customarymanner, with i the annular edge of the lens adjacent the an-* nularedge of the canopy which canopy edge may be beaded. The ring l6,.with its joint separated, is then placed over the adjacent edges of the canopy and lamp lens with the ringfront flange" extending over the edge of the lamp lens 15 and the rear beveled edge 22 of the ring extending over the'edge of the canopy. A pair of sharp nose pliers is then used to grip the nubs 3| and pull the ends of the ring I6 together until the male clip 24 has its wings 28 caught behind the bent upwings 26 ofthe female clip, thus holding 1 the ring l6 and the lamp l5 secured to the ca'nopy [2. To remove the lamp lens I5, the samesharp nose pliers are used, squeezing the nubs 3| toward each other untiljthe 'clips are disengaged, permittingthe ring and then thelens and lamp to be removed. r

While the ring [5 is herein [5 of the sealed-beam type, but that it may within which is hinged at l3 the canopy I2 forming part of a retractable landing headlight M. This landing light I4 includes asealed-beam type of lamp whose lens I5 is secured to the j lamp canopy l2 by means of the retaining ring I6 constituting this invention. 1

This retaining ring 16, consists of an annular front flange 11 extending from the. rounded off edge l8 of a slightly receding concave annulus connected by a rounded edge 2| to a beveled rear flange 22. This ring [6 is provided with a eprate therefrom.

also be used with equal facility with conventional types of lights Where the lamp is separate from the lens, and the member l5 represents the lens t of the lamp, whether integral therewith or sepa- Other modificat'ionsand changes in the mumwhat is hereinafter claimed.

formed by bending the wings 26 of the head 21 forwardly at right angles so that the wings 28 of the head 30 of the male clip24 may be seated therebehind and be held in position by the tension in the ring. Both clips are riveted in proper The invention described herein may be manufactured and used by or for the Government of the United States of America for governmental purposes without the payment of any, royalties thereon or therefor.

What is claimed is 1. A lamp lens retaining ring comprising an annulus, concave in cross section, both edges of the annulus being rounded, a flange extending inwardly from each rounded edge Of the annulus, the flange from one edge being substantiall in i one plane, the flange from the other edge being described as a lamp lens retaining ring, itwill be understood that the ring I5 is not limited to being used with a lamp.

beveled at an angle to the annulus, and a securing joint formed in said annulus, said joint including a tongue on one end of the joint adapted to underlie the other end of the joint, a male clip.

riveted on one end, a female clip on the other end and a raised nub on each clip adapted to cooperate with a tool for engaging or disengaging the male and female clips.

2. A lamp lens retaining ring comprising an annulus, concave in cross section, a flange extending inwardly from each edge of the annulus,

a securing joint formed in said annulus, said-- joint including a tongue on 1011B end of the joint 3. A lamp lens retaining ring-comprising an annulus, concave in cross section, the diameter of one edge of the annulus being slightly less than the diameter of the other edge of the annulus,

both edges being rounded, a flange extending inwardly from each rounded edge of the annulus, the flange from the large diametered edge being substantially in one plane, the flange from the smaller diametered edge being beveled at an angle to the annulus, a securing joint formed in said annulus, said joint including a tongue on one end of the joint adapted to underlie the other end of the joint, a male clip riveted on one end, a

female clip on the other end and a raised nub on each clip adapted to cooperate with a tool for engaging or disengaging the male and female clips, each clip consisting of an extending head and side wings thereon, the wings'of the female clip being bent upwardly to engage behind the Wings of the male clip in engaging position.

JOHN M. ROPER.- 

